EP 0539412 B1 19941228 - CIRCUIT ARRANGEMENT FOR REVERSING A MAGNETIC FIELD.
Title (en)
CIRCUIT ARRANGEMENT FOR REVERSING A MAGNETIC FIELD.
Title (de)
SCHALTUNGSANORDNUNG ZUR UMKEHRUNG EINES MAGNETFELDES.
Title (fr)
CIRCUIT D'INVERSION D'UN CHAMP MAGNETIQUE.
Publication
Application
Priority
- DE 4022400 A 19900713
- EP 9101261 W 19910705
Abstract (en)
[origin: WO9201286A1] Magneto-optical recording and reproducing devices have an electromagnet which reverses the magnetization of the magneto-optical layer of the magneto-optical disk in function of the bits to be stored. To ensure rapid and reliable reversal of the magnetic field, a capacitor (C), a series connection consisting of a diode (D1) and a first controllable switch (S1) and a series connection consisting of a coil (SP1) and a second controllable switch (S2) are connected in parallel and connected in parallel to a current source (Q). The controllable switches (S1, S2) are activated by a control circuit (G).
IPC 1-7
IPC 8 full level
G11B 5/02 (2006.01); G11B 5/09 (2006.01); G11B 11/10 (2006.01); G11B 11/105 (2006.01)
CPC (source: EP)
G11B 5/09 (2013.01); G11B 11/10508 (2013.01)
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
WO 9201286 A1 19920123; AT E116467 T1 19950115; DE 4022400 A1 19920116; DE 59104087 D1 19950209; EP 0539412 A1 19930505; EP 0539412 B1 19941228; HK 8996 A 19960126; HU 216678 B 19990830; HU 9203954 D0 19930329; HU T64637 A 19940128; JP 3199730 B2 20010820; JP H05508957 A 19931209; KR 100239989 B1 20000201
DOCDB simple family (application)
EP 9101261 W 19910705; AT 91912524 T 19910705; DE 4022400 A 19900713; DE 59104087 T 19910705; EP 91912524 A 19910705; HK 8996 A 19960118; HU 395492 A 19910705; JP 51163591 A 19910705; KR 930700084 A 19930113